Harley-Davidson Nuremberg gets Europe Street Legal Homologation For Jim’s 131″Racing Motor. A very big deal for European bikers on a continent where motorcycle regulations are extremely tough with very few authorized stock modifications, much less than in the USA. The Harley-Davidson & Buell Nuremberg dealer in Bavaria, Germany, succeeded in fighting European Economic Community (EEC) red tape, not a small or cheap endeavor… Power hungry European Harley riders are going to rush to this dealership, for now the only location where they can swap their stock Harley motor for this Jim’s European version.

And to prove the gain in performance under such displacement, Nuremberg Harley dealer owner Fritz Jonak equipped a Harley FLHX Street Glide and FXD Fat Bob with the 131″ Jim’s motor, then organized a race against a 427 cubic inch Shelby Mustang GT (the one made famous by Steve McQueen in the movie “Bullit”.) You guessed the result. Advantaged by weight, both motorcycles easily smoked the Mustang over and over. Apart from a slightly modified stock primary and gearbox and the use of a KessTech exhaust, both stock Harley were able to handle the extra horsepower without any issue.

This street legal 131“ race engine fits into all stock and after market frames with plenty of room for all “in-frame“ service work. It features the same stroke as Jim‘s 120“ at 4 ½“, but carries a larger bore diameter of 4 5/16“.

A TV crew immortalized the races and I will run the English video version in my website as soon as available. Harley-Davidson Of Nuremberg. (photography copyright Horst Roesler)

Thanks Rick …
Saw one at the V=Twin Expo
120, 121, 131, 135ci from various sources/manufacturers
Might say they’re for Racing only but take a look in any biker, choppers and/or baggers rag, there are PLENTY of them out on the street
No replacement for displacement !!!!